MacBook Air not wake up after sleep

Hi,
My MacBook Air(Mid 2012) can't wake up after sleep. I recently updated operation system to Mac OS X Mavericks and now after sleep mode screen goes black and nothing happens after this. Only thing that I could do is hard reboot by pressing power button and boot again. Do anyone have the same issue and suggestions how to fix this?
Thanks in advance
Dmitrii

Same thing here. MBA 2011 working perfectly until I updated to Mavericks.
It often doesn't wake up fully. It does draw the password input box but there's no text cursor and no input is possible. The mouse cursor is not visible either. Waiting does nothing (tried ~15 minutes, no change). Closing the lid does not put the laptop back to sleep, it's fully frozen and the only way out is a reboot by holding the power button.

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MacBook Air not wake up after sleep

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